JPS5774711A - In-focus degree displaying method of automatic focus adjustment device - Google Patents

In-focus degree displaying method of automatic focus adjustment device

Info

Publication number
JPS5774711A
JPS5774711A JP55150789A JP15078980A JPS5774711A JP S5774711 A JPS5774711 A JP S5774711A JP 55150789 A JP55150789 A JP 55150789A JP 15078980 A JP15078980 A JP 15078980A JP S5774711 A JPS5774711 A JP S5774711A
Authority
JP
Japan
Prior art keywords
light emitting
focus
emitting diode
light
adjustment device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP55150789A
Other languages
Japanese (ja)
Other versions
JPS6355690B2 (en
Inventor
Mitsuo Eguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mamiya Camera Co Ltd
Original Assignee
Mamiya Camera Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mamiya Camera Co Ltd filed Critical Mamiya Camera Co Ltd
Priority to JP55150789A priority Critical patent/JPS5774711A/en
Publication of JPS5774711A publication Critical patent/JPS5774711A/en
Publication of JPS6355690B2 publication Critical patent/JPS6355690B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals

Abstract

PURPOSE:To facilitate focusing by judging an in-focus state properly, by varying the light-emission ratio of two light emitting diodes arranged in one chip and differing in emitted-light color. CONSTITUTION:In one chip or package, a light emitting diode DG for green light emission and a light emitting diode DR for red light emission are arranged close to each other to obtain a display element 13. An output signal F corresponding to an in-focus degree is inputted from the signal processing circuit 5 of an automatic focus adjustment device to an inverting amplifier 11 and a noninverting amplifier 12; the output of the inverting amplifier 11 is applied to the light emitting diode DG, and that of the noninverting amplifier 12 to the light emitting diode DR. Consequently, the display element 13 varies in mixed tone continuously in the order of green for the in-focus state, yellow and red according to an out-of-focus degree, so the in-focus state is judged properly to facilitate focusing.
JP55150789A 1980-10-29 1980-10-29 In-focus degree displaying method of automatic focus adjustment device Granted JPS5774711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55150789A JPS5774711A (en) 1980-10-29 1980-10-29 In-focus degree displaying method of automatic focus adjustment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55150789A JPS5774711A (en) 1980-10-29 1980-10-29 In-focus degree displaying method of automatic focus adjustment device

Publications (2)

Publication Number Publication Date
JPS5774711A true JPS5774711A (en) 1982-05-11
JPS6355690B2 JPS6355690B2 (en) 1988-11-04

Family

ID=15504461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55150789A Granted JPS5774711A (en) 1980-10-29 1980-10-29 In-focus degree displaying method of automatic focus adjustment device

Country Status (1)

Country Link
JP (1) JPS5774711A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5145556A (en) * 1974-10-17 1976-04-19 Ricoh Kk Kyorikenshutsu hoho oyobi sochi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5145556A (en) * 1974-10-17 1976-04-19 Ricoh Kk Kyorikenshutsu hoho oyobi sochi

Also Published As

Publication number Publication date
JPS6355690B2 (en) 1988-11-04

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